Catalytic Converter Shield Plates for Theft Deterrence
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Solution Overview
Problem
Existing solutions for preventing catalytic converter theft are complex, difficult to install, and do not effectively deny access to the converter, while also requiring visual inspection and airflow maintenance, and are not adaptable to different vehicle models and designs.
Innovation Solution
A novel system comprising metal plates and boxes securely attached to the vehicle's underside, using security fasteners and vents to cover and protect catalytic converters, preventing easy access while allowing visual inspection and airflow, specifically designed for various vehicle models like the Toyota Prius and Nissan NV-200.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cable cage design surrounds the catalytic converter with aircraft grade wire rope, then theft deterrence is improved, but device complexity and installation difficulty increase significantly
Solution Approach 1:
The protective device is divided into multiple flat plate segments that can be individually positioned and secured around the catalytic converter. Each plate is a simple component that can be independently installed, eliminating the need for complex cable cage structures while maintaining effective protection.
Solution Approach 2:
The invention uses simple, inexpensive flat plates made from readily available materials instead of expensive aircraft grade wire rope. These plates provide effective protection at a fraction of the cost and complexity of cable cage designs.
2Reliability
If a strap with multi-cable construction is used to secure the catalytic converter, then theft deterrence is improved, but ease of operation and visual inspection access deteriorate
Solution Approach 1:
The protective structure is segmented into multiple flat plates with strategically positioned openings. These openings provide clear visual access to the catalytic converter for inspection purposes while the plates themselves maintain security protection, eliminating the need to remove complex strap systems for inspection.
3Reliability
If a cover is placed over the catalytic converter to prevent access, then theft deterrence is improved, but airflow to the converter is blocked
Solution Approach 1:
The flat plates are configured with specific local qualities - solid sections for protection and strategically positioned openings for airflow. This allows the structure to provide theft deterrence while maintaining necessary exhaust gas flow through and around the catalytic converter, preventing energy loss.
4Reliability
If a vehicle-specific design is created for each catalytic converter configuration, then theft deterrence effectiveness is improved, but adaptability to different vehicle models deteriorates
Solution Approach 1:
The flat plate design serves multiple functions across different vehicle models. The universal configuration can be adapted to various catalytic converter positions and shapes by adjusting plate dimensions and opening locations, providing effective protection for different vehicle types including Toyota Prius and Nissan NV-200 without requiring completely different designs.
Data Source
AI summary
A system and method for deterring catalytic converter theft are described. A variety of devices are described which can be installed as needed on the underside of a vehicle as part of a system to prevent easy access to the points where a catalytic converter is connected to the vehicle, thus deterring theft, or to prevent a catalytic converter from being removed from the vehicle after being disconnected from the exhaust system. The method comprises installing said devices to prevent this access. The devices may be installed separately or combined to protect multiple catalytic converters as needed and as dictated by the particular design of the exhaust system of a particular vehicle.